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Rectangular black laptop battery with label showing 66DWX part number

PowerWarehouse

PowerWarehouse 66DWX laptop battery for Latitude 13 7340 14 7440 16 7640

SKU CH-7ZQR-HF5RY

Replaces the original 3-cell 11.4 V 4878 mAh battery in Latitude 13 7340, 14 7440 and 16 7640 models

  • CompatibilityLATITUDE 13 7340, 14 7440, 16 7640, 7340, 7440, 7640
  • Battery Type3 Cell Lithium-Ion
  • Reliable power for Latitude 13 7340, 14 7440, 16 7640
  • Matches OEM part numbers 086D0Y, CN-0JNYT4, 0JNYT4, JNYT4, 66DWX, CN-086D0Y
  • Three-cell lithium-ion chemistry delivers stable voltage
  • Rated 11.4 V and 4878 mAh for extended runtime
  • Brand-new unit backed by 12-month warranty

Direct replacement for Latitude 13 7340 14 7440 16

This three-cell lithium-ion pack matches the original 66DWX specification at 11.4 V and 4878 mAh. It is built for owners of the Latitude 13 7340, 14 7440 and 16 7640 who need a new battery that fits the factory bay without modification.

Swaps out the original 66DWX 086D0Y CN-0JNYT4 cells

When the factory pack no longer holds a useful charge, this unit restores the same voltage and capacity. The jump is worth it when run-time has dropped below what the workload demands and a factory-spec replacement is preferred over higher-capacity alternatives.

Fits the existing chassis bay and connector

No extra cabling or mounting hardware is required; the pack uses the same three-cell form factor and OEM connector. It frees the user from hunting for discontinued Dell service parts while keeping the laptop’s original weight and balance.

Highlights

  • Reliable power for Latitude 13 7340, 14 7440, 16 7640
  • Matches OEM part numbers 086D0Y, CN-0JNYT4, 0JNYT4, JNYT4, 66DWX, CN-086D0Y
  • Three-cell lithium-ion chemistry delivers stable voltage
  • Rated 11.4 V and 4878 mAh for extended runtime
  • Brand-new unit backed by 12-month warranty

Specifications

Part Number086D0Y, CN-0JNYT4, 0JNYT4, JNYT4, 66DWX, CN-086D0Y
CompatibilityLATITUDE 13 7340, 14 7440, 16 7640, 7340, 7440, 7640
Battery Type3 Cell Lithium-Ion

Questions about this item

Will the 66DWX battery fit my Latitude 13 7340 without modification?

Yes, the 66DWX is built to the exact dimensions of the OEM 086D0Y pack used in the Latitude 13 7340, 14 7440 and 16 7640, so it seats in the original bay with no adapters.

What is the installation step most people miss when swapping this 3-cell 11.4 V pack?

After inserting the battery, reconnect the internal cable and hold the power button for fifteen seconds before the first boot; skipping this reset often leaves the new pack unrecognised.

How long until the 4878 mAh lithium-ion cells need replacing under daily charging?

The 12-month warranty period reflects the expected service window; after that the cells will gradually hold less charge and a replacement 66DWX will be needed.

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